Final answer:
The attack on Pearl Harbor, Hawaii, caused the United States to enter World War 2.
Step-by-step explanation:
The location of the attack that caused the United States to enter World War 2 was Pearl Harbor, Hawaii.
On December 7, 1941, Japanese forces launched a surprise military strike on the U.S. naval base at Pearl Harbor. This attack resulted in significant damage to the U.S. Pacific Fleet and led to the United States' entry into World War 2.
The Pearl Harbor attack prompted the United States to declare war on Japan the following day. It marked a turning point in the war, with the United States becoming fully engaged in the global conflict.
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